You should be around a 14.5 x anywhere from 19 to 23. You don't have enough power to beyond that unless you put more ponies under the hood. It really depends on what you want to use it for. Very few people are concerned with getting that last 5 mph out of it. My 261 is not a good comparison to yours. I have twins, 14.5 x 23 four blade. I could have went up or down the scale to tweak it. Four verus three blade. You don't gain much on the bottom end and you loose on the top.
If I where to spend for new props, it would be 3 blade Steleto's. If you just have one engine. I would go with around 19 to 21.
_________________ 1992 Baja 38 Special Twin 502 Mags
03 Stingray 3.0 88 261 Liberator 460 King Cobras 95 Bayliner 1850 3.0 77 Fiber Form 20ft 350/385hp 70 Wescraft 1800 SS 455 Jet
Lead, Follow, or get the Hell out of the Way!
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